Device for cutting tubes



J. F. PIERCE.

DEVICE FOR CUTTING TUBES.

APPLICAHON HLED MAR. 30, 1917.

Patentd July 6, 1920.

4 SHEETSSHEET l.

lnmmor 2 JZWMSFFLZI" Patented July 6, 1920.

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I damsfi'mr A Z1 r J.-F. PIERCE.

DEVSCE FOR CUTTING TUBES.

APPLICATION FILED MAR. 30. 1917.

1,345,458. Patented July 6, 1920.

4 SHEETS-SHEET 3.

1 F. PIERCE. DEVICE FOR CUTTING TUBES.

APPLICATION FILED MAR. 30.1917.

Patented July/6, 1920.

'7 iii/#MWWMMWWWWWWW m m M embodying the improvements.

V111: V111, i Fig. IX, is a transverse sectionalview on the lineIX, IX, of Fig. I.

UNITED STATES PATENT o FicE.

JAMES F. PIERCE, or GLYNRICH, DELAWARE, ASSIGNOR To "AMERioANvULcAmzED FIBRE 00., 0F WILMINGTON, DELAWARE, A CORPORATION OF DELAWARE.

DEVICE FOR CUTTING TUBES.

Z '0 all whom it may concern: 7 r Be it known that I, JAMES F. Prnnon, 0 Glynrich, in the county of New Castle and State of Delaware, have invented certain new and useful Improvements in Devicesfor Cutting Tubes, whereof the following is a specification, reference being had to the accompanying drawings.

Theinvention relates more particularly to a device for cutting large tubes, such as seamless fiber tubes which are used in making receptacles or the like.

An object of the invention is to provide a cutting device of the above character where in, a yielding pressure'roll cooperates with 1 the cutting disks for feeding the material to said cutting disks.

A further object of the invention is to provide a cutting device with means for engaging v the material and supporting the same, so that it may be-freely turned and presented to the cutting mechanism.

A still further object'of the invention is to provide a gage cooperating with the cutting mechanism, so that the material may be trimmed to a predetermined length.

These and other. objects will in part be obvious and will in part be hereinafter more fully disclosed.

In the drawings, which show by way of illustration one embodiment of the invention, Figure I, is a side view of a machine Fig. II, is a sectionalview on the line II, II, of Fig. I. r

Fig. III, isa sectional view on the line III, III of Fig. I. i

Fig. IV, is a front view of the machine. Fig. V,- is a view of the supporting wheel and gage for supporting the tube being trimmedfl- V Fig. V1, is a sectional view on the line VI, VI, of Fig. V. i Fig- VII, is a longitudinal sectional view through the cutting mechanism. g Fig. VIII, is a sectional. view on the line of Fig. VII.

Fig. X, is a vertical sectional view through the supporting'clamp.

The IIIVQIltlOIlCOIlSlStS prnnarily inya sup- .porting standard on which is mounted a work supporting arm carryingwa cutting disk and also an-overhangingarm carrying I I Specification of Letters lfatent. [Patented Ji ly (5, 1920, Application filed March 30, 1917. Serial No. 158,766. 7

a cooperating cutting disk. These cutting disks are mounted on shafts which are intergeared, and driven by suitable driving mechanism. Mounted on the shaft of the upper .disk is a smaller yielding pressure roll or disk which engages the material being trimmed and feeds the same between the CllSkS, Thisyielding pressure roll and the :upper cutting. disk are mounted for ,rotaseparate the cutting'disks in order to insert I the material between them. This adjustable bearing permits this to be done. Cooperating with the cutting. disks and mounted in -an adjustable bracket, is a clamp, which is capable of being expanded or contracted to respectively clamp or release the tube to be cut. Cooperating with the clamp is a supporting wheel mounted to turn freely on a shaft carriedby a standard,this wheel operating to support the outer end of the tube being trimmed. Cooperatingwith this supporting wheel is a gage which engages the end of the tube and determines the length to which it is to. be trimmed.

H Referring more in detail to the drawings, the invention is shown as applied to a ma chine having a supporting standard 1, carried by a base 2. A work supporting arm 3', is mounted on the standard Land extending lengthwise of the arm 3, is a shaft 4,

which. carries a lower cutting disk 5. The

. disk 5., is clamped to the end of the shaft 4,

by a nut 6. A suitable bearing 7, is formed at the end of the work supporting. arm for the shaftj l, see Fig. VIILThis shaft extends through the standard and is'provided witha suitable 'pullev 10, which may be used for driving the same. There'is also a loose may bequicklyshifted from the loose pulley 'pulley ll, mounted on the shaft, and the belt is operated bya hand lever13, (see FigfIV). I

Also carried by the standard 1. anoverhanging arm *14. Extending througlrthe arm 14 and pivotally journaled" near one end therein, is a shaft 15, carrylngasec- :ond cuttingfdisk 16, which is disposed ion the shaft '15,. so as to cooperate withthe cutting disk '5, by overlapping the same, as is well known in'thistype .ofcuttmg mechanism. Adjacent the cutting disk 16, is a smaller disk or roll 17, made of rubber or other yielding material, and the two disks are secured on the shaft 15, by a' nut 18. The shaft 15, is intergeared as 1ndicated at 15), with shaft 4, and is journaled at its free end in a bearing 20, which is mounted to slide in the free end of the overhanging arm 14, and is adjusted by means of a shaft 21, which isthreaded at 22, and engages a threaded aperture 80, in the bearing 20. This shaft 21, is provided with a handle 23, whereby the shaft may be qulckly turned to raise and lower the bearing 20, which adjustment is permitted by reason of the pivotal movement of the opposite end of the shaft 15 in the arm 14.

The diameter of the rubber disk 17, is

slightly less than that of the cutting disk 16, so that, when the cutting disks 5, and "16, are in overlapped cutting relation, the disk 17, rips the material being cut and exerts a yielding pressure thereon which cooperates with the disk 5, to feed the matei no I fiber or other similar material.

rial to the cutting disks 5, and 16.

The cutting device is especially adapted for cutting seamless tubes, such as indi cated at T, in the drawings, which are of Such a tube is inserted between the disks when separated as above described, and properly placed for trimming, after which the handle 23, is turned to bring. the cutting disk 16, down on to the tube and by gradually increas ng the pressure the disks cut through the tube. As soon as the yielding disk 17, engages the outer face of the tube, it grips the surface thereof, gradually turning the same and feeding it to the cutting disks.

Coiiperating with the cutting disks is a rotatable supporting clamp for the tube.

This supporting clamp consists of four seg- 'ments 24, eachof which ismounted on a sliding radial bar 25, see Figs. IX and X. Bars 25, slide in guideways 26, formed in a support 82. integrally formed with a sleeve '27, whichis in turn mounted on the outer end of a tubular extension 28.. The exten- 'sion 28, isfixed to a'br'acket 29,;whichis adapted to slide in suitable .guideways 30, carried by the standard, and a set'screw 31,

holds the bracket25), in adjusted positions. The sleeve 27.,is 'rotatably connected to a collar 32 which is secured to the extension 28, by a set-screw This permits the sl'eevea27,"withthe support 82, and the segmerits carried thereby-to "rotate, but prevents the same from moving endwis'e on the extension 28. The radial'bars25, areheld in placeby a capplate 34i Located in each guideway atv the inner endof the bars 25.-'is a dog'35. These dogs arepivoted to a collar 36, whichis adapted to slide endwise on the sleeve '27, but turns therewith. j The collar 36,; is secured to rod carried by the bracket 29. By swinging the lever 38, the rod 37, is moved endwise. Co-

operating with each segment 24, is a spring 40, the outer GIlCljO'f which is attached to the segment and the inner end to the support 82. These springs normally tend to force the segments inwardly, thus contracting the clamp.

'VVhen the rod 37, is shifted to the'right, as viewed in Fig. VII, the dogs, 35,'are moved out at their lower ends'and permit the springs to withdraw the segments. When the rod 37, is moved in the opposite direction, however, the dogs 35 force the radial. rods 25, outwardly and move the segments 24, out into clamping position;

In the drawings, the clamp is shown expanded and engaging the tube which is supported thereby. The whole clamp, as above noted, is mounted on the sleeve 27, which may freely turn so that, while the tube is clamped and supported, it may be rotatably fed to present its entire periphery to the cutting devices. 7 Y e Associated with this clamping device is a supporting wheel41, which is mounted to turn freely on arod42, clamped to a boss 4-3, by a set screw 44. The boss 43, is

formed integral with a collar 45, which is fixed collar 46. Shaft 47, is mounted ina suitable base 48; Wheel 41, is adapted to extend within the tube. so as to support the outer end thereof. This wheel is also ad justed so that its top is on thesame level with the top of the lower cuttingdisk 5, so

as to hold the tube being cut in ahorizon'tal position. 7

For determining the length of'the tube, a gage disk 49, is ])IOVlClCd...2111(l is carried by an arm 50. so that it may'freely rotate thereon. I The arm 50, s freely supported on rod 51. which is adjustably secured within 'a'boss 52'by a set'screw The boss 52,1is

integral withthc collar 54, and. thisis set by a screw 55, to the shaft '47. The movement of the 'arm 50, around the rod is limited bya stop collar 56, (seeFig. VI), which has a. lug 57, formed thereon. adapted'to engage" a lug 58. formed'on the shank 83, ofithe arm 50. T he arm 50, is held onthe rod by a cap screw 59. In practice the tate its insertion into. the end-{of the tube to be trimmed, the gage disk 49, being at the a supporting wheel i ll, is swung about the vertical shaft 47, to facili over the same and shifted rearwardly to the extent allowed by the gage disk, whereupon the clamp is expanded, the power applied and the upper cutting disk brought into engagement with its fellow until the cutting operation is completed.

It is obvious that minor changes in the details of construction and the arrangement of parts may be made without departin from the spirit of the invention as set forth in the appended claims.

Having thus .described my invention, I claim:

1. A tube cutting machine including in combination, a supporting frame, a rotatable shaft mounted in said supporting frame, a cutting disk mounted on said shaft, a second rotatable shaft pivotally mounted in the supporting frame and capable of being moved toward and from the first named shaft, a cutting disk mounted on the second named shaft and cooperating with the disk on the first named shaft, a supporting bracket for the movable shaft, and a hand wheel for adjusting said bracket vertically to move the shafts toward and from eachother.

2. A tube cutting machine including in combination, a supporting frame, a rotatable shaft mounted in said supporting frame, a cutting disk mounted on said shaft, a second rotatable shaft pivotally mounted in the supporting frame and capable of being moved toward and from the first named shaft, a cutting disk mounted on the second named shaft and cooperating with the disk on the first named shaft, a supporting bracket for the movable shaft, a hand wheel for adjusting said bracket vertically to move the shafts toward and from each other, and a yielding feed roll carried by the movable shaft and opposed to and cooperating with the disk on the first named shaft for feeding the tube to the cutting disks.

3. A tube cutting machine including in combination, cooperative cutting disks, means for moving said cutting disks toward and from each other to receive the work therebetween, a rotatable "clamping device for supporting the tube to be trimmed, said clamping device including radially movable segments for engaging the inner face of the tube, springs for moving said segments toward the center of the clamping devlce, ex-

panding dogs for moving the segments out wardly to clamp the tube, said dogs being arranged to hold the clamping device expanded, and manually controlled means-for moving the dogs.

4. A tube cutting machine including in combination, a supporting frame, cutting disks mounted on said supporting frame, an

expansible clamping device for engaging the inner face of thetube and supporting the same horizontally, said clamping device'being rotatably mounted so that the tube may be turned as it is trimmed, means cooperating with the cutting disks for feeding the tube to said cutting disks, and a supporting wheel for guiding and supporting the outer. end of the tube.

5. A tube cutting machine includingin combination, a supporting frame, cutting disks mounted on said supporting frame, an eXpansible clamping device for engaging the inner face of the tube and supporting the same horizontally, said clamping device being rotatably mounted so that the tube may be turned as it is trimmed, means co- 1 operating with the cutting disks for feeding the tube to said cutting disks, a supporting wheel for guiding and supporting the outer end of the tube, and a gage for engaging the outer end of the tube for determining length thereof.

6. A tube cutting machine including in the combination, a supporting frame, a rotatable shaft mounted in said supporting frame, a cutting disk mounted on said shaft, a second rotatable shaft pivotally mounted in the supporting frame and capable of being moved toward and from the first named shaft, a cutting disk mounted on the second named shaft and cooperating with the disk on the first named shaft, a supporting bracket for the movable shaft, a journal mounted onthe end of one of saidshafts and having a threaded opening, and an ad-' justing means rotatably journaled on said bracket and having a threaded portion engaging with the threaded opening in said 

